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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-245.883637
Energy at 298.15K 
HF Energy-245.883637
Nuclear repulsion energy160.059081
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at mPW1PW91/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3374 3194 0.56 121.86 0.11 0.19
2 A' 3349 3170 0.85 39.46 0.65 0.79
3 A' 3331 3154 0.71 81.55 0.46 0.63
4 A' 1612 1526 8.46 2.64 0.11 0.20
5 A' 1478 1399 28.91 29.71 0.40 0.57
6 A' 1406 1331 5.01 4.72 0.12 0.22
7 A' 1263 1195 8.16 8.94 0.28 0.44
8 A' 1168 1105 19.50 8.30 0.53 0.70
9 A' 1113 1053 3.50 7.79 0.13 0.24
10 A' 1066 1009 15.46 3.08 0.70 0.83
11 A' 945 895 3.94 5.12 0.66 0.80
12 A' 926 876 1.33 1.51 0.61 0.76
13 A' 797 755 21.93 8.46 0.18 0.30
14 A" 956 905 4.14 2.06 0.75 0.86
15 A" 919 870 2.64 0.63 0.75 0.86
16 A" 817 773 79.14 0.88 0.75 0.86
17 A" 644 610 6.35 0.06 0.75 0.86
18 A" 604 572 11.17 1.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12883.8 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 12195.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/6-31G
ABC
0.32257 0.31021 0.15813

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 0.378 0.000
C2 0.633 -0.961 0.000
C3 0.000 1.147 0.000
N4 -0.687 -1.029 0.000
O5 -1.112 0.349 0.000
H6 2.148 0.700 0.000
H7 1.199 -1.878 0.000
H8 -0.180 2.207 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42591.36052.29212.23431.07492.25722.2448
C21.42592.20131.32212.18232.24801.07703.2707
C31.36052.20132.28171.36832.19423.25371.0749
N42.29211.32212.28171.44213.32052.06823.2751
O52.23432.18231.36831.44213.27863.20922.0782
H61.07492.24802.19423.32053.27862.74672.7730
H72.25721.07703.25372.06823.20922.74674.3109
H82.24483.27071.07493.27512.07822.77304.3109

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.992 C1 C2 H7 128.260
C1 C3 O5 109.928 C1 C3 H8 134.030
C2 C1 C3 104.347 C2 C1 H6 127.470
C2 N4 O5 104.196 C3 C1 H6 128.183
C3 O5 N4 108.536 N4 C2 H7 118.748
O5 C3 H8 116.041
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.238      
2 C -0.019      
3 C 0.132      
4 N -0.128      
5 O -0.409      
6 H 0.205      
7 H 0.225      
8 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.228 1.599 0.000 3.602
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.183 -2.644 0.000
y -2.644 -24.631 0.000
z 0.000 0.000 -29.968
Traceless
 xyz
x -1.883 -2.644 0.000
y -2.644 4.944 0.000
z 0.000 0.000 -3.061
Polar
3z2-r2-6.123
x2-y2-4.552
xy-2.644
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.918 -0.249 0.000
y -0.249 6.555 0.000
z 0.000 0.000 2.170


<r2> (average value of r2) Å2
<r2> 78.251
(<r2>)1/2 8.846